Quick answers
- Does Susan K. Nifenecker accept Medicare assignment?
- Yes. Medicare's clinician data says Susan K. Nifenecker accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Susan K. Nifenecker see?
- In 2024, CMS data shows 140 Original Medicare patients and 1,425 services for Susan K. Nifenecker. This counts Original Medicare only and measures volume, not quality.
- What is Susan K. Nifenecker's NPI number?
- 1144233420. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Susan K. Nifenecker, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 140 |
|---|---|
| Services billed to Medicare | 1,425 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)812 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)398 services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)190 services
- Psychiatric diagnostic evaluation with medical services (90792)15 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol69%
- Depression56%
- Diabetes54%
- Arthritis54%
- Anxiety51%
Practice locations
Addresses where Susan K. Nifenecker is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Lake RdValley Cottage, NY 10989 (845) 268‑6813
- 147 2nd AveBrentwood, NY 11717 (631) 273‑7204
- 330 Elmore StCentral Islip, NY 11722 (914) 949‑1199
Group practices
Medicare enrollment lists Susan K. Nifenecker as a member of this group (CMS data updated October 2, 2026).
- New York General Medical Services PC20 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Valley Cottage
Clinicians with the same Medicare primary specialty in Valley Cottage, NY — not a recommendation.
Other clinicians in New York General Medical Services PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144233420 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians